<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>userlist</title>
</head>
<body>
<form action="loginchk">
  用户名:<input type="text" name="username"><br />
  密码:<input type="password" name="password"><br />
  <input type="submit">
</form>

</body>
</html>